class_docstr: Simple TicTacToe Env, starts the game randomly half of the time.
code: def seed(self, seed=None):
      self.np_random, seed = seeding.np_random(seed)
      return [seed]
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import gym
  from gym import spaces
  from gym.utils import seeding
  import numpy
  from tensor2tensor.data_generators import problem
  from tensor2tensor.layers import modalities
  from tensor2tensor.rl import gym_utils
label_desc: Use image node_id 2 for calling the TicTacToeEnv obj's underlying member method code with example usage: obj.seed(seed) and returns: list